Beater blade assembly



Aug. 12, 1958 A. H. SMITH BEATER BLADE ASSEMBLY Filed June 26, 1956 fiar/enfer da y United States Patent O BEATERBLADE ASSEiVIBLY Aaron H. Smith), Ipswich, Mass.,

assignor to Signal Manufacturing Co., Lynn, Mass., a corporation of Massaf chusetts Application `lunel, 1956', Serial 7 Claims; (Cl. 259-131) Thisinvention relates-tofhousehold beaters for usein preparing foodand a beater assembly withfimproved beater action in whichhas for its principal objects'to provide thediameters of the`b'eaterwbladeV loops arenot limited byth'e:spacingof'the'beater'sockets, to provide abeater assembly in which large diameter beaters may be employed without correspondinglyincreasing the Yspacing of the sockets .andl hence without` having vto employ larger castings, gears could be used only beater assembly-in tionally size beaters may and.- so forth,` which are" expensive and for'beaters of that size, to provide a `which large: size beaters and conveninterchangeably be used, and

to provideI a'beater1assembly in which large'size beaters may be inserted andzremoved independently, that is, one

may bel inserted orV removed without `disturbing the other thus avoiding thewawkwardness of havinglto insert and remove both-` at thesame time.A

As hereinillustrated,theassembly comprises a frame carryingia `pair of-zparallel -sh'aft sockets for receiving'ther shafts of Va pair of beatersvwhich have intermeshing loops equal to ror greater inradius: than that distance between the sockets and 1n which each beater serted or f removed independently ofdisturbing thesocket'spacingior the other beater.

is adapted tot'be inthe other without This-is axially disposedbearing surface` which hasa relatively large cross-section fat fits cross-section inwardly mouth fand 'a relatively smaller adapted to beengaged'therewithy has anI axially' disposed bearing surface which has at its leading end a crosssection corresponding:` to` they inner bearing of smaller cross-'sectional area and rearwardly i of "itsf-leading end a cross-sectioncorresponding toithat of the Vmouth of the socket. T het leadingend of the shaft permitsthe beater to be` tiltedv outwardly from the other beater as it is thrust into the socket andis long enough so. that the shaft may bepushedr upwardly into `the/socket until the lower end of the beater clears whereuponl it may and further thrust portions of gagernentf.

which exceeds that of -the sockets and the other, although sary to have only omitted;

theslowermost part'of the other beater,

beswung into parallelism therewith into the socketito bring' the bearing the corresponding sections into driving en- The' beater blade loops may havea radius distance'between' the sockets and both shafts are providedwith bearing sur-4 facesof; different diameter so as the beaters to be removed or inserted independently of to permit either `one of it is to be understood that it is necesone of the sockets and beater shafts constructed in this fashion.

The invention will now with reference to the accompanying drawings wherein: Fig. 1 is an elevation of a pair of beaters arranged within driving sockets, the driving mechanism being be described in greater detail thereof',A and -1 they beater shafti Fig. 2 is a section taken on the line 2-2 of Fig. 1, lookingdown on theztop of the' beaters',

Fig. 3 isa section taken on the line 3-3 of Fig. 1;

Fig. 4 is an'elevation to'. larger scale partly in section showing one of the beatersein-the process of being inserted or removed from its` driving socket', and

Fig. 5 is a horizontal section on the line S-S of Fig. l.

Referring to the drawings, thebeater assembly 10 (Fig. l), includes a support 12.from which extends a pair of parallel spaced sockets 14 containing driven bearings, which will be described hereinafter, into which are drivably inserted apair` of'beaters 16. Each beater hasa beater shaft 18 for engagement the sockets and is made up of radial disposed Vblade loops 20, of which there are here shown two, fastened at their upper ends to a boss 2.2 xed to the lower extremity of the shaft. The blade loops are disposed at right angles to each other and the lower-end of oneloop vcrosses theother loop and is fixed thereto by suitable means, for example a rivet 24. The vblade loops; as will be seen particularly with referencerto Fig. 2, have aradius r which is substantially equal to the distance between the axes of the sockets 14. In order to have beaters of this size or of a larger size, as is within the contemplation of this inven tion, it is necessary bottom.

With blades of the sizel shown and' larger diameter blades it is impossible to insertror remove one beater after the other has been inserted if the spacing of the bearings is equal to or not greater than the radius of the loops. sect the distance rlsfrom the axis of crotch at the intersection of the loops of the other beater is less than the radial distance r between the axes of the beaters so that the shoulder at the lower end of the loop of the beater being inserted binds against the lower part of the inserted beater. intermesh the two 'beaters and insert them simultaneously or remove them simultaneously and this is an undesirable and awkward procedure.

ln accordance with this invention the beaters are not only provided with blades in which the radial length may be as great or'greaterthan the distance between the driving sockets but also beaters which may be removed or inserted independently of each other, that is, one may be removed without disturbing the other. This is accomplished herein by providing each beater socketwith a driven `bearing 26 (Fig. 4) of novel construction and the shaft of each beater with a correspondingly novel bearing for association therewith, as will subsequently appear. Conventionally each bearing has at its lower end a plurality of peripherally disposed slots 28 for interengageably receiving nubs 30 on the shafts 18. Each shaft may also have an annular shoulder 32 below the nubs 30 corresponding substantially in diameter to the lower end of the socket 14 which acts as a stop for lubricant in the bearing.

ln accordance with the invention each of the bearings 26 has axially disposed internal bearing surfaces 34 and 36. The bearing surface 34 which commences at the mouth of the vsocket is of larger diameter than the bearing surfacefdwhichis located at the bottom ofthe socket. Each of the shafts has an axially disposed bearing of two diamters 38 and 40, the bearing 38 being at the leading end of the shaft and corresponding in diameter to the bearing 36 and the bearing 40 being located rearwardly of the bearing 38 and corresponding in diameter to the bearing 34. Because of the difference in diameters of the bearing 34 at the entrance of the socket and the bearing 38 at the leading end of the shaft 1S, It is possible to insert the beater at the right-hand side (Fig. 4) at an with a bearing of one of" to omit prolongation. of the shaft 18` from the boss 22', downwardly through the loops to they The reason for this is that where Vthe loops'inter one beater to the` The only recourse therefore is to v angle with reference to the other beater at the left-hand bearing sockets mounted thereon for receiving the shafts side, that is, tilt it outwardly away from the beater. By of a pair of beaters, said bearing sockets having a predemaking the leading end 38 of sutlicient length it is postermined spacing, a pair of beaters having shafts adapted sible to insert the beater upwardly into the socket until to be drivably engaged within said sockets, said beaters the shoulder at the lower part of any one of its loops having blade loops of greater radius than the distance be- Iocated between a pair of loops of the other beater clears tween the axes of the sockets, one of said sockets containfurther thrust into the socket to engage the leading end shafts for engagement with said socket having an axially beater may be removed by disengaging the bearing 38 cross-sectional area and which has rearwardly of its leadfrom the bearing 36 tilting the beater outwardly at a ing end a cross-section corresponding to that of the mouth small angle and then drawing it downwardly beyond the of the socket, said leading end of the shaft permitting the other beater. beater to be tilted outwardly away from the other beater 34 thus to retain the `beaters in place. 20 the other beater, whereupon it may be swung into paral- It is evident from the foregoing that it is possible -by lelism therewith and further thrust into the socket to bring the construction described to employ beaters wherein the the bearing portions of corresponding sections into driving blades are equal in radius to the distance between the engagement. v beater sockets or exceed this distance without having to 4. In a `beater mechanism, a frame, a pair of parallel have larger castings and a greater spacing between the bearing sockets mounted thereon for receiving the shafts sockets which would entail greater cost in manufacture. of a pair of beaters, said bearing sockets having a prede- Moreover it is apparent that this construction permits use termined spacing, a pair of beaters having shafts adapted of larger diameter beaters in conventionally spaced beater to be drivably engaged within said sockets said beaters sockets by substituting in the sockets bearing elements having blade loops of greater radius than the distance besuch as described thus making it possible to use the aptween the axes of the sockets, one of said sockets conparatus with either conventional size beaters or the large taining an axially disposed bearing surface which has a size beaters described herein. relatively large diameter 'at its mouth and a smaller diam- It should be understood that the present disclosure is eter inwardly thereof, the one of the shafts for engagefor the purpose of illustration only and that this invention ment with said socket having an axially disposed bearing includes all modifications and equivalents which fall surface which at its leading end corresponds in diameter within the scope of the appended claims. to the inner bearing of smaller diameter and which has I claim: f rearwardly of its leading end a diameter corresponding 1. In a beater mechanism, a frame, a pair of fixed to that of the mouth of the socket, said leading end of the ybearing sockets mounted on the frame for receiving the shaft permitting the beater to lbe tilted outwardly away shafts of a pair of beaters, with the axes in spaced parallel 40 from the other beater as it is inserted into the shaft and engaged with said sockets, said beaters having intermeshwardly into the socket far enough to clear the lower part ing blade loops, the radii of which are not less than the of that beater with respect to the lower part of the other distance between the center lines of the sockets, the driv- 'beater to permit it to be swung into parallelism therewith ably engaged portions of one of the sockets and the beater 45 and thrust further into the socket to 'bring the portions of shaft engaged therewith having axially disposed stepped corresponding diameter into complete engagement. bearing portions of different diameter permitting axial 5. A beater mechanism according to claim 3, wherein and tilting movement of the shaft within its socket to clear that portion of the beater shaft which corresponds in the beater blades of that shaft of the blades of the other cross-section to the mouth of the socket `carries a friction `beater during engagement with and disengagement 'from 50 ring'. the socket. 6. A beater mechanism according to claim 3, wherein 2. In a beater mechanism, a frame, a pair of fixed bearthat portion of the beater shaft which corresponds in ing sockets mounted on the frame for receiving the shafts cross-section to the mouth of the socket is relatively short of a pair of beaters with their axes in spaced parallel relaso as to have contact only with that portion of the mouth loops disposed in planes intersecting the axis of the shaft, 7. Beater mechanism according to claim 3, wherein the said loops being connected at their upper ends to the lower engaged bearing portions of the shaft and socket are end of the shaft and at their lower ends to each other said axially relatively short as compared to the overall axial loops having diameters which are not less than twice the length of the shaft and socket.

shafts in the sockets whereby one of the shafts is tiltable References Cited 1'11 the 51e Of this Pattint with reference to the other during engagement of the shaft UNITED STATES PATENTS with the socket or disengagement therefrom to permit 

